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4MXM68M
User Manual
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Daikin 4MXM68M, 2MXM40M User Manual

Service
Manual
RA R32 Split &
ESIE16-02B
multi split M-Series
Indoor unit Outdoor unit
FTXJ-M FTXM-M FTXP-KV FDXM-F RXJ-M RXM-M MXM-M MXM-N
RA R32 Split & multi split M-Series
The present publication is drawn up by way of information only and does not constitute an offer binding upon Daikin Europe N.V.. Daikin Europe N.V. has compiled the content of this publication to the best of its knowledge. No express or implied warranty is given for the completeness, accuracy, reliability or fitness for particular purpose of its content and the products and services presented therein. Specifications are subject to change without prior notice. Daikin Europe N.V. explicitly rejects any liability for any direct or indirect damage, in the broadest sense, arising from or related to the use and/or interpretation of this publication. All content is copyrighted by Daikin Europe N.V..
Page 2 4/04/17 | Version 1.1
RA R32 Split & multi split M-Series
ESIE16-02B |
Part 1. Introduction ....................................................................................................................9
1.1. Version log .................................................................................................................................................9
1.2. Safety precautions ...................................................................................................................................10
1.2.1. Meaning of symbols .....................................................................................................................................10
1.2.2. Warnings ...................................................................................................................................................... 10
1.2.3. Cautions ....................................................................................................................................................... 12
1.2.4. Information ...................................................................................................................................................12
1.3. General operation ....................................................................................................................................13
1.4. How to use ...............................................................................................................................................14
1.4.1. Interactive information flow ........................................................................................................................... 14
1.4.2. Parts of the book ..........................................................................................................................................15
1.4.2.1. The introduction chapter .......................................................................................................................... 15
1.4.2.2. The troubleshooting chapter .................................................................................................................... 15
1.4.2.3. The repair chapter .................................................................................................................................... 15
1.4.2.4. The maintenance chapter ........................................................................................................................ 15
1.4.2.5. Appendices .............................................................................................................................................. 15
1.4.3. Contact information ......................................................................................................................................15
Part 2. Troubleshooting ...........................................................................................................17
2.1. Error codes check ....................................................................................................................................17
2.1.1. Error codes via remote controller ................................................................................................................. 17
2.1.1.1. General .................................................................................................................................................... 17
2.1.1.2. How to reset error codes .......................................................................................................................... 17
2.1.1.3. History of error codes ............................................................................................................................... 17
2.1.2. Error codes via outdoor unit PCB .................................................................................................................18
2.1.2.1. How to retrieve error codes ...................................................................................................................... 18
2.1.2.2. How to reset error codes .......................................................................................................................... 18
2.1.2.3. History of error codes ............................................................................................................................... 19
2.1.2.4. Content of retry ........................................................................................................................................ 19
2.2. Error based troubleshooting .....................................................................................................................20
2.2.1. Indoor unit .................................................................................................................................................... 21
2.2.1.1. “A1-00” – PCB abnormality ...................................................................................................................... 21
2.2.1.2. “A1-01” – PCB abnormality ...................................................................................................................... 21
2.2.1.3. “A5-00” – Freeze-up protection / Heating peak cut control ...................................................................... 22
2.2.1.4. “A6-00” – Fan motor abnormality ............................................................................................................. 22
2.2.1.5. “C4-00” – Liquid pipe thermistor for heat exchanger abnormality ............................................................ 23
2.2.1.6. “C7-00” – Front panel open/close fault .................................................................................................... 23
2.2.1.7. “C9-00” – Suction air thermistor abnormality ........................................................................................... 23
2.2.1.8. “UH-00” – Anti-icing function in other room(s) ......................................................................................... 24
2.2.2. Outdoor unit .................................................................................................................................................. 25
2.2.2.1. “E1-00” – Outdoor unit PCB abnormality ................................................................................................. 25
2.2.2.2. “E3-00” – Discharge pressure abnormality .............................................................................................. 25
2.2.2.3. “E5-00” – Compressor motor lock or overheated ..................................................................................... 26
2.2.2.4. “E6-00” – Compressor motor lock ............................................................................................................ 26
2.2.2.5. “E7-00” – Fan motor abnormality ............................................................................................................. 27
2.2.2.6. “E8-00” – Compressor overcurrent detection ........................................................................................... 28
2.2.2.7. “EA-00” – 4-way valve abnormality .......................................................................................................... 28
2.2.2.8. “F3-00” – Discharge pipe temperature abnormality ................................................................................. 29
2.2.2.9. “F6-00” – High pressure abnormality or refrigerant overcharge ...............................................................29
2.2.2.10. “H0-00” – Compressor sensor system abnormality ............................................................................... 30
2.2.2.11. “H6-00” – Position detection sensor abnormality ................................................................................... 30
2.2.2.12. “H8-00” – Compressor input (CT) system abnormality .......................................................................... 31
2.2.2.13. “H9-00” – Outdoor air temperature thermistor abnormality ....................................................................31
2.2.2.14. “J3-00” – Discharge pipe thermistor abnormality ................................................................................... 32
2.2.2.15. “J5-00” – Suction pipe thermistor abnormality .......................................................................................32
2.2.2.16. “J6-00” – Outdoor heat exchanger thermistor abnormality .................................................................... 32
2.2.2.17. “J8-00” – Liquid pipe thermistor abnormality .......................................................................................... 33
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RA R32 Split & multi split M-Series
2.2.2.18. “J9-00” – Gas pipe thermistor abnormality ............................................................................................. 33
2.2.2.19. “L1-00” – Outdoor main PCB abnormality ..............................................................................................34
2.2.2.20. “L3-00” – Switch box temperature abnormality ......................................................................................34
2.2.2.21. “L4-00” – Inverter radiating fin temperature abnormality ........................................................................35
2.2.2.22. “L5-00” – Inverter instantaneous overcurrent (AC output) .....................................................................36
2.2.2.23. “P4-00” – Radiating fin temperature sensor abnormality ....................................................................... 36
2.2.3. System ......................................................................................................................................................... 38
2.2.3.1. “U0-00” – Refrigerant shortage ................................................................................................................ 38
2.2.3.2. “U2-00” – Power supply abnormality or instantaneous power failure .......................................................38
2.2.3.3. “U4-00” – Transmission abnormality between indoor unit and outdoor unit .............................................39
2.2.3.4. “U7-00” – Transmission outdoor unit-outdoor unit abnormality ................................................................40
2.2.3.5. “UA-00” – Improper combination of indoor unit and outdoor unit .............................................................40
2.2.3.6. “UF-00” – Wiring and piping mismatch ..................................................................................................... 41
2.2.4. Others .......................................................................................................................................................... 41
2.3. Symptom based troubleshooting ............................................................................................................ 42
2.3.1. Indoor unit .................................................................................................................................................... 42
2.3.2. Outdoor unit ................................................................................................................................................. 42
2.3.3. System ......................................................................................................................................................... 42
2.3.4. Others .......................................................................................................................................................... 42
2.4. Component checklist ............................................................................................................................... 43
2.4.1. Indoor unit .................................................................................................................................................... 44
2.4.1.1. Fan motor ................................................................................................................................................. 44
2.4.2. Outdoor unit ................................................................................................................................................. 45
2.4.2.1. 4-way valve .............................................................................................................................................. 45
2.4.2.2. Compressor .............................................................................................................................................. 47
2.4.2.3. Electronic expansion valve ....................................................................................................................... 49
2.4.2.4. Fan motor ................................................................................................................................................. 51
2.4.2.5. High pressure sensor ............................................................................................................................... 52
2.4.2.6. Main PCB .................................................................................................................................................53
2.4.2.7. Pressure sensor ....................................................................................................................................... 54
2.4.2.8. Refrigerant thermistors ............................................................................................................................. 56
2.4.3. System ......................................................................................................................................................... 58
2.4.4. Others .......................................................................................................................................................... 58
2.5. Other capacity range ............................................................................................................................... 59
Part 3. Repair ............................................................................................................................61
3.1. Refrigerant repair procedures ................................................................................................................. 61
3.1.1. Refrigerant piping handling .......................................................................................................................... 61
3.1.2. Recovery procedure ..................................................................................................................................... 61
3.1.2.1. Outdoor unit casing .................................................................................................................................. 61
3.1.3. Refrigerant pump down ................................................................................................................................ 63
3.1.3.1. Small outdoor unit ....................................................................................................................................63
3.1.3.2. Large outdoor unit ....................................................................................................................................64
3.1.4. Piping repair procedures .............................................................................................................................. 64
3.2. Service tools ........................................................................................................................................... 65
3.3. Unit specific repair procedures ............................................................................................................... 66
3.3.1. Indoor unit .................................................................................................................................................... 67
3.3.2. Outdoor unit ................................................................................................................................................. 68
3.3.2.1. Basic removal ........................................................................................................................................... 68
3.3.2.2. Replacing switch box ...............................................................................................................................71
3.3.2.3. Replacing 4-way valve body .................................................................................................................... 73
3.3.2.4. Replacing 4-way valve coil ....................................................................................................................... 75
3.3.2.5. Replacing compressor .............................................................................................................................76
3.3.2.6. Replacing DC fan motor assembly ........................................................................................................... 79
3.3.2.7. Replacing expansion valve body .............................................................................................................. 81
3.3.2.8. Replacing expansion valve motor ............................................................................................................ 82
3.3.2.9. Replacing main PCB ................................................................................................................................84
3.3.2.10. Replacing propeller fan blade assembly ................................................................................................ 85
3.3.2.11. Replacing thermistors ............................................................................................................................ 87
3.3.2.12. Setting test mode for inverter checker ................................................................................................... 88
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RA R32 Split & multi split M-Series
ESIE16-02B |
Part 4. Maintenance .................................................................................................................89
4.1. Indoor unit ................................................................................................................................................89
4.1.1. General maintenance ................................................................................................................................... 89
4.2. Outdoor unit .............................................................................................................................................90
4.2.1. General maintenance outdoor unit ............................................................................................................... 90
Part 5. Appendix .......................................................................................................................91
5.1. Field setting ..............................................................................................................................................93
5.1.1. Indoor unit .................................................................................................................................................... 93
5.1.1.1. Indoor fan control during thermostat off in cooling ................................................................................... 93
5.1.1.2. Brightness setting of multi-coloured lamp of the indoor unit .................................................................... 93
5.1.1.3. ON/OFF button on the indoor unit ............................................................................................................ 93
5.1.2. Outdoor unit .................................................................................................................................................. 94
5.1.2.1. Facility setting for outdoor split units ........................................................................................................ 94
5.1.2.2. Multi split outdoor ..................................................................................................................................... 94
5.1.3. Remote controller ......................................................................................................................................... 96
5.2. Detailed information setting mode ...........................................................................................................97
5.2.1. Indoor unit .................................................................................................................................................... 97
5.2.2. Outdoor unit .................................................................................................................................................. 97
5.2.3. Remote controller ......................................................................................................................................... 97
5.3. Wiring diagram .........................................................................................................................................98
5.3.1. Indoor unit .................................................................................................................................................... 98
5.3.2. Outdoor unit .................................................................................................................................................. 99
5.3.2.1. 2MXM50M ................................................................................................................................................ 99
5.3.2.2. 3MXM68M ................................................................................................................................................ 99
5.3.2.3. 4MXM-M ................................................................................................................................................ 100
5.3.2.4. 5MXM-M ................................................................................................................................................ 100
5.3.2.5. RXJ20-35M ............................................................................................................................................ 101
5.3.2.6. RXJ50M ................................................................................................................................................. 101
5.3.2.7. RXM20-35M ........................................................................................................................................... 101
5.3.2.8. RXM42-50M ........................................................................................................................................... 102
5.3.2.9. RXM60-71M ........................................................................................................................................... 102
5.3.2.10. RXM71M .............................................................................................................................................. 103
5.3.3. Field wiring ................................................................................................................................................. 103
5.4. Piping diagram .......................................................................................................................................104
5.4.1. Indoor unit .................................................................................................................................................. 104
5.4.2. Outdoor unit ................................................................................................................................................104
5.4.2.1. 2MXM40M .............................................................................................................................................. 104
5.4.2.2. 3MXM68M .............................................................................................................................................. 105
5.4.2.3. 4MXM68M .............................................................................................................................................. 105
5.4.2.4. 5MXM-M ................................................................................................................................................ 106
5.4.2.5. RXJ20-35M ............................................................................................................................................ 106
5.4.2.6. RXJ50M ................................................................................................................................................. 107
5.4.2.7. RXM20-35M ........................................................................................................................................... 107
5.4.2.8. RXM42-50M ........................................................................................................................................... 108
5.4.2.9. RXM60 ................................................................................................................................................... 108
5.4.2.10. RXM71M .............................................................................................................................................. 109
5.5. Component overview of unit ..................................................................................................................110
5.5.1. Indoor unit .................................................................................................................................................. 110
5.5.2. Outdoor unit ................................................................................................................................................110
5.6. Product specific information ...................................................................................................................111
5.6.1. Error codes ................................................................................................................................................. 111
5.6.1.1. “E7-00” – Fan motor abnormality ........................................................................................................... 111
5.6.1.2. “EA-00” – Malfunction of 4-way valve .................................................................................................... 111
5.6.1.3. “F3-00” – Discharge pipe temperature abnormality ............................................................................... 111
5.6.1.4. “L3-00” – Switch box temperature abnormality ...................................................................................... 111
5.6.1.5. “L4-00” – Inverter radiating fin temperature abnormality ........................................................................ 111
5.6.2. Component checklist .................................................................................................................................. 111
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RA R32 Split & multi split M-Series
5.7. Switch box ............................................................................................................................................. 111
5.7.1. Indoor unit .................................................................................................................................................. 111
5.7.2. Outdoor unit ............................................................................................................................................... 111
5.8. Field information report ......................................................................................................................... 112
Page 6 4/04/17 | Version 1.1
RA R32 Split & multi split M-Series
ESIE16-02B |
Figure 2-1: Service display location ..........................................................................................................................18
Figure 3-1: 1 service port at the stop valves .............................................................................................................62
Figure 3-2: 3 service ports at the stop valves ...........................................................................................................63
Figure 3-3: Removing refrigerant connection cover ..................................................................................................68
Figure 3-4: Removing the top plate ...........................................................................................................................69
Figure 3-5: Removing the front plate .........................................................................................................................70
Figure 3-6: Removing the compressor sound insulation ...........................................................................................70
Figure 3-7: Removing the switch box ........................................................................................................................72
Figure 3-8: Removing the 4-way valve ......................................................................................................................73
Figure 3-9: Removing the 4-way valve coil ...............................................................................................................75
Figure 3-10: Removing the compressor ....................................................................................................................77
Figure 3-11: Removing the DC fan motor assembly .................................................................................................80
Figure 3-12: Removing the expansion valve .............................................................................................................81
Figure 3-13: Removing the expansion valve motor ...................................................................................................82
Figure 3-14: Locking the expansion valve motor ......................................................................................................83
Figure 3-15: Removing the main PCB ......................................................................................................................84
Figure 3-16: Removing the DC fan motor assembly .................................................................................................86
Figure 3-17: Replacing a thermistor ..........................................................................................................................87
Figure 5-1: How to change fan OFF to ON when in cooling thermo off ....................................................................93
Figure 5-2: Jumper settings ......................................................................................................................................94
Figure 5-3: Service PC board wiring error check switch location ..............................................................................94
Figure 5-4: Dip switch location ..................................................................................................................................95
Figure 5-5: S15 connector location ...........................................................................................................................96
Figure 5-6: Jumper location ......................................................................................................................................96
Figure 5-7: Wiring diagram - outdoor unit 2MXM50M ...............................................................................................99
Figure 5-8: Wiring diagram - outdoor unit 3MXM68M ...............................................................................................99
Figure 5-9: Wiring diagram - outdoor unit 4MXM-M ................................................................................................100
Figure 5-10: Wiring diagram - outdoor unit 2MXM50M ...........................................................................................100
Figure 5-11: Wiring diagram - outdoor unit RXJ20-35M .........................................................................................101
Figure 5-12: Wiring diagram - outdoor unit RXJ50M ...............................................................................................101
Figure 5-13: Wiring diagram - outdoor unit RXJ20-35M .........................................................................................101
Figure 5-14: Wiring diagram - outdoor unit RXM42-50M ........................................................................................102
Figure 5-15: Wiring diagram - outdoor unit RXM60-71M ........................................................................................102
Figure 5-16: Wiring diagram - outdoor unit RXM71M .............................................................................................103
Figure 5-17: Piping diagram - outdoor unit 2MXM40M ...........................................................................................104
Figure 5-18: Piping diagram - outdoor unit 3MXM68M ............................................................................
Figure 5-19:
Piping diagram - outdoor unit 4MXM68M ...........................................................................................105
...............105
Figure 5-20: Piping diagram - outdoor unit 2MXM50M ...........................................................................................106
Figure 5-21: Piping diagram - outdoor unit RXJ20-35M ..........................................................................................106
Figure 5-22: Piping diagram - outdoor unit RXJ50M ...............................................................................................107
Figure 5-23: Piping diagram - outdoor unit RXJ20-35M ..........................................................................................107
Figure 5-24: Piping diagram - outdoor unit RXM42-50M ........................................................................................108
Figure 5-25: Piping diagram - outdoor unit RXM60 .................................................................................................108
4/04/17 | Version 1.0 Page 7
RA R32 Split & multi split M-Series
ESIE16-02B |
Figure 5-26: Piping diagram - outdoor unit RXM71M ............................................................................................. 109
Figure 5-27: Component overview - outdoor unit ................................................................................................... 110
Page 8 4/04/17 | Version 1.0
RA R32 Split & multi split M-Series
ESIE16-02B | Part 1. Introduction 1.1. Version log
Part 1. Introduction
This part contains the following chapters:
Version log..............................................................................................................................................................................................9
Safety precautions................................................................................................................................................................................10
General operation.................................................................................................................................................................................13
How to use ...........................................................................................................................................................................................14
1.1. Version log
Version code Description Date
ESIE16-02A Document release 21/03/2017
ESIE16-02B Manual also applicable for MXM-N 04/04/2017
4/04/17 | Version 1.0 Page 9
RA R32 Split & multi split M-Series
ESIE16-02B | Part 1. Introduction 1.2. Safety precautions
1.2. Safety precautions
The precautions described in this document cover very important topics, follow them carefully.
All activities described in the service manual must be performed by an authorized person.
If you are not sure how to install, operate or service the unit, contact your dealer.
In accordance with the applicable legislation, it might be necessary to provide a logbook with the product containing at least: information on maintenance, repair work, results of tests, stand-by periods, …
Also, at least, following information must be provided at an accessible place at the product:
• Instructions for shutting down the system in case of an emergency
• Name and address of fire department, police and hospital
• Name, address and day and night telephone numbers for obtaining service
In Europe, EN378 provides the necessary guidance for this logbook.
1.2.1. Meaning of symbols
WARNING
Indicates a situation that could result in death or serious injury.
WARNING: RISK OF ELECTROCUTION
Indicates a situation that could result in electrocution.
WARNING: RISK OF BURNING
Indicates a situation that could result in burning because of extreme hot or cold temperatures.
WARNING: RISK OF EXPLOSION
Indicates a situation that could result in explosion.
WARNING: RISK OF POISONING
Indicates a situation that could result in poisoning.
WARNING: RISK OF FIRE
Indicates a situation that could result in fire.
CAUTION
Indicates a situation that could result in equipment or property damage.
INFORMATION
Indicates useful tips or additional information.
1.2.2. Warnings
WARNING
Improper installation or attachment of equipment or accessories could result in electric shock, short-circuit, leaks, fire or other damage to the equipment. Only use accessories, optional equipment and spare parts made or approved by Dai­kin.
Page 10 4/04/17 | Version 1.0
RA R32 Split & multi split M-Series
ESIE16-02B | Part 1. Introduction 1.2. Safety precautions
WARNING
Make sure installation, testing and applied materials comply with applicable legislation (on top of the instructions described in the Daikin documentation).
WARNING
Make sure the work site environment is clean and safe to work in. Beware of spilled fluids, like water, oil or other sub­stances. Protect bystanders from injury and property from possible damage cause by service works.
WARNING
Wear adequate personal protective equipment (protective gloves, safety glasses,…) when installing, maintaining or ser­vicing the system.
WARNING
Tear apart and throw away plastic packaging bags so that nobody, especially children, can play with them. Possible risk: suffocation.
WARNING
Do NOT touch the air inlet or aluminium fins of the unit.
WARNING
• Do NOT place any objects or equipment on top of the unit.
• Do NOT sit, climb or stand on the unit.
WARNING
During tests, NEVER pressurize the product with a pressure higher than the maximum allowable pressure (as indicated on the nameplate of the unit).
WARNING
• Never mix different refrigerants or allow air to enter the refrigerant system.
• Never charge recovered refrigerant from another unit. Use recovered refrigerant only on the same unit where it was recovered from, or have it recycled at a certified facility.
WARNING: RISK OF FIRE
• When reconnecting a connector to the PCB, do not apply force or damage the connector or the connector pins on the PCB.
WARNING: RISK OF BURNING
• Do NOT touch the refrigerant piping, water piping or internal parts during and immediately after operation. It could be too hot or too cold. Give it time to return to normal temperature. If you must touch it, wear protective gloves.
• Do NOT touch any accidental leaking refrigerant.
WARNING
Always recover the refrigerants. Do NOT release them directly into the environment. Use a recovery pump to evacuate the installation.
Take sufficient precautions in case of refrigerant leakage. If refrigerant gas leaks, ventilate the area immediately.
Possible risks:
• Excessive refrigerant concentrations in a closed room can lead to oxygen deficiency.
• Toxic gas may be produced if refrigerant gas comes into contact with fire.
Where applicable, pump down the system and close the service valve, before leaving the site if leak was not repaired, to avoid further leaking of the refrigerant.
WARNING: RISK OF ELECTROCUTION
• Turn OFF all power supply before removing the switch box cover, connecting electrical wiring or touching electrical parts. Where applicable, stop the equipment's operation first and allow (refrigerant) pressure to equalize, before turning OFF the power. Disconnect the power supply for more than 1 minute, and measure the voltage at the terminals of main circuit capacitors or electrical components before servicing. The voltage must be less than 50 V DC before you can touch electrical components. For the location of the terminals, refer to "Wiring diagram" on page 98.
• Do NOT touch electrical components with wet hands.
• Do NOT leave the unit unattended when the service cover is removed.
• Protect electric components from getting wet while the service cover is opened.
4/04/17 | Version 1.0 Page 11
RA R32 Split & multi split M-Series
ESIE16-02B | Part 1. Introduction 1.2. Safety precautions
WARNING
• Only use copper wires.
• All field wiring must be performed in accordance with the wiring diagram and installation manual supplied with the product.
• If the power cable and lead wires have scratches or deteriorated, be sure to replace them. Damaged cable and wires may cause an electrical shock, excessive heat generation or fire.
• Secure all terminal connections and provide proper routing for cables, both inside and outside the switchbox.
• NEVER squeeze bundled cables and make sure they do not come in contact with the piping and sharp edges.
• Make sure no external pressure is applied to the terminal connections.
• Make sure to check the earth wiring. Do NOT earth the unit to a utility pipe, surge absorber, or telephone earth. Improper earth wiring may cause electrical shock.
• Make sure to use a dedicated power circuit. NEVER use a power supply shared by another appliance.
• Make sure to check the required fuses and/or circuit breakers before starting works.
WARNING
• After finishing the electrical work, confirm that each electrical component and terminal inside the electrical components box is connected securely.
• Make sure all covers are closed before starting the unit again.
1.2.3. Cautions
CAUTION
Provide adequate measures to prevent that the unit can be used as a shelter by small animals. Small animals that make contact with electrical parts can cause malfunctions, smoke or fire.
CAUTION
• Make sure water quality complies with EU directive 98/83 EC.
• Check the system for leaks after each repair/modification of the water side.
• Check drainage system(s) after repairs.
• Be careful when tilting units as water may leak.
1.2.4. Information
INFORMATION
Make sure refrigerant piping installation complies with applicable legislation. In Europe, EN378 is the applicable stand­ard.
INFORMATION
Make sure the field piping and connections are not subjected to stress.
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RA R32 Split & multi split M-Series
ESIE16-02B | Part 1. Introduction 1.3. General operation
1.3. General operation
• These split units are used for comfort cooling and are equipped with an inverter.
• The rotation speed rps (= rotation per second) of the inverter driven compressor, modulated by the inverter, can be varied according the required capacity in the room.
• The compressor capacity step is changed in order to reach target compression ratio. The target compression ratio is calculated from deviation between actual and target condensation and evaporation temperature.
• Tc (condensing temperature) is used in heating mode.
• Te (evaporation temperature) is used if any indoor unit operates in cooling mode.
• The evaporating temperature in the heat exchanger is controlled by the electronic expansion valve.
• When indoor unit is selecting heating mode, discharge gas is supplied by the outdoor unit to the indoor unit.
• When indoor unit is selecting cooling mode, liquid refrigerant is supplied by the outdoor unit to the indoor unit.
1. Compressor 4. Outdoor heat exchanger
2. Indoor heat exchanger 5. 4-way valve
3. Expansion valve 6. Stop valves
4/04/17 | Version 1.0 Page 13
RA R32 Split & multi split M-Series
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ESIE16-02B | Part 1. Introduction 1.4. How to use
1.4. How to use
1.4.1. Interactive information flow
This Daikin product Service Manual is intended for professional use only. The actions described hereafter, are only to be performed by qualified and certified persons, taking into account the safety precautions mentioned in this manual and the local regulations as well.
By following the diagram below, the reader can find the relevant information related to his/her task. The digital (pdf) version of this book allows direct page access through all active links. When Adobe Acrobat Reader is used, the <Alt> + <Back Arrow> keys or the arrow in the top right-hand corner of this page can be used to return to the previously viewed page.
?
Is this your 1st encounter with this particular unit?
How to retrieve
Error Codes
YES
PART 2
Troubleshooting
?
Is an Error Code
displayed?
NO
NO
?
What do you need to do?
PART 3
Repair
YES
PART 4
Maintenance
General
operation
Installation
Refer to:
Installation Manual
or
Installer Reference Guide
Error Code based
troubleshooting
Component
checklist
?
Is repair necessary?
e
Page 14 4/04/17 | Version 1.0
Symptom based troubleshooting
RA R32 Split & multi split M-Series
ESIE16-02B | Part 1. Introduction 1.4. How to use
1.4.2. Parts of the book
This Daikin product Service Manual is intended for professional use only. The actions described hereafter, are only to be performed by qualified and certified persons, taking into account the safety precautions mentioned in this manual and the local regulations as well.
As can be observed from the Table of Contents, this manual is split up into several chapters:
1.4.2.1. The introduction chapter
The chapter "Introduction" on page 9 includes the safety precautions, this topic and the general operation description of the product(s) this manual refers to.
1.4.2.2. The troubleshooting chapter
The chapter "Troubleshooting" on page 17 not only deals with the methods to recognize and resolve occurring error codes; it also describes the methods how to solve a problem that does not immediately trigger an error code. Such problems are referred to as 'symptom based'. Both the error code based and symptom based troubleshooting tables, indicate possible causes, the necessary checks and in case required, how to repair. The possible causes have been sorted to probability of occurrence and speed of execution.
1.4.2.3. The repair chapter
The chapter "Repair" on page 61 handles the removal and replacement of the major components in the product and discusses cleaning methods as well if applicable, such as for filters. Where applicable, refrigerant handling precautions are mentioned for certain actions; please consider these carefully for your own safety.
1.4.2.4. The maintenance chapter
The chapter "Maintenance" on page 89 of this manual describes the maintenance intervals and procedures to be performed on the product. Remember that a well maintained product, is a more reliable and efficient product.
1.4.2.5. Appendices
Finally, the service manual provides in chapter "Appendix" on page 91 valuable reference data such as piping/wiring diagrams, field settings overview and a checklist to be filled in when you need to escalate an issue to your dealer.
1.4.3. Contact information
This manual has been made with much care and effort. Use it in your daily jobs, as it has been made for you.
Despite our efforts, there is always a chance some cleric or other mistake has been made during the creation of this manual. We kindly ask you to send the found mistakes, or remarks for improvement, to the no-reply email address
servicemanual@daikineurope.com.
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RA R32 Split & multi split M-Series
ESIE16-02B | Part 1. Introduction 1.4. How to use
Page 16 4/04/17 | Version 1.0
RA R32 Split & multi split M-Series
ESIE16-02B | Part 2. Troubleshooting 2.1. Error codes check
Part 2. Troubleshooting
This part contains the following chapters:
Error codes check ................................................................................................................................................................................17
Error based troubleshooting.................................................................................................................................................................20
Symptom based troubleshooting ..........................................................................................................................................................42
Component checklist............................................................................................................................................................................43
Other capacity range ............................................................................................................................................................................59
2.1. Error codes check
2.1.1. Error codes via remote controller
2.1.1.1. General
If operation stops due to malfunction, the remote controller’s operation LED blinks, and malfunction code is displayed. (Even if stop operation is carried out, malfunction contents are displayed when inspection mode is entered.) The malfunction code enables you to tell what kind of malfunction caused operation to stop.
2.1.1.2. How to reset error codes
When the problem is solved, you can reset the error by pushing the ON/OFF-button.
2.1.1.3. History of error codes
Not applicable for this remote controller.
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RA R32 Split & multi split M-Series
1
ESIE16-02B | Part 2. Troubleshooting 2.1. Error codes check
2.1.2. Error codes via outdoor unit PCB
2.1.2.1. How to retrieve error codes
Troubleshooting via the service display.
GREEN RED GREEN FLASHING: NORMAL
MICRO-
COMPUTER
NORMAL
LED-A
MALFUNCTION DETECTION
LED1LED2LED3LED4LED
c xxxxx cwxwwx cwxwxx cxwwxx cxwxwx c wwxxx cwwxwx cxxxwx cxxwxx cxxwwx cwxxwx c wxxxx cwwwxx cwwwwx c xwxxx w c
— — — — — (Note 1)
— — — — — power supply fault
5
normal -> check indoor unit
high pressure protector activated or freeze-up in operating unit, or stand-by unit
overload relay activated or high discharge pipe temperature
faulty compressor start
input overcurrent
thermistor or ct abnormality
high temperature switchbox
high temperature at inverter circuit heatsink
output overcurrent
refrigerant shortage
low voltage to main circuit or over voltage to main circuit
reversing solenoid valve switching failure. * or high pressure switching failure
faulty outdoor unit pcb
fan motor fault
wiring error check unfinished
RED OFF: NORMAL
* MAY NOT BE APPLICABLE DEPENDING ON THE MODEL
DIAGNOSIS
w
x
ON
OFF
c
—
FLASHING
ANY STATUS
Note 1: Turn the power off and on again
Figure 2-1: Service display location
1. Service monitor LEDs
2.1.2.2. How to reset error codes
1. When the problem is solved, perform a power reset
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ESIE16-02B | Part 2. Troubleshooting 2.1. Error codes check
2.1.2.3. History of error codes
Not applicable
2.1.2.4. Content of retry
Not applicable
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RA R32 Split & multi split M-Series
ESIE16-02B | Part 2. Troubleshooting 2.2. Error based troubleshooting
2.2. Error based troubleshooting
Overview of error codes:
Indoor unit............................................................................................................................................................................................ 21
“A1-00” – PCB abnormality...................................................................................................................................................... 21
“A1-01” – PCB abnormality...................................................................................................................................................... 21
“A5-00” – Freeze-up protection / Heating peak cut control...................................................................................................... 22
“A6-00” – Fan motor abnormality............................................................................................................................................. 22
“C4-00” – Liquid pipe thermistor for heat exchanger abnormality ........................................................................................... 23
“C7-00” – Front panel open/close fault.................................................................................................................................... 23
“C9-00” – Suction air thermistor abnormality........................................................................................................................... 23
“UH-00” – Anti-icing function in other room(s) ......................................................................................................................... 24
Outdoor unit......................................................................................................................................................................................... 25
“E1-00” – Outdoor unit PCB abnormality................................................................................................................................. 25
“E3-00” – Discharge pressure abnormality.............................................................................................................................. 25
“E5-00” – Compressor motor lock or overheated .................................................................................................................... 26
“E6-00” – Compressor motor lock ........................................................................................................................................... 26
“E7-00” – Fan motor abnormality............................................................................................................................................. 27
“E8-00” – Compressor overcurrent detection .......................................................................................................................... 28
“EA-00” – 4-way valve abnormality.......................................................................................................................................... 28
“F3-00” – Discharge pipe temperature abnormality ................................................................................................................. 29
“F6-00” – High pressure abnormality or refrigerant overcharge .............................................................................................. 29
“H0-00” – Compressor sensor system abnormality ................................................................................................................. 30
“H6-00” – Position detection sensor abnormality..................................................................................................................... 30
“H8-00” – Compressor input (CT) system abnormality............................................................................................................ 31
“H9-00” – Outdoor air temperature thermistor abnormality ..................................................................................................... 31
“J3-00” – Discharge pipe thermistor abnormality..................................................................................................................... 32
“J5-00” – Suction pipe thermistor abnormality......................................................................................................................... 32
“J6-00” – Outdoor heat exchanger thermistor abnormality...................................................................................................... 32
“J8-00” – Liquid pipe thermistor abnormality ........................................................................................................................... 33
“J9-00” – Gas pipe thermistor abnormality .............................................................................................................................. 33
“L1-00” – Outdoor main PCB abnormality ............................................................................................................................... 34
“L3-00” – Switch box temperature abnormality........................................................................................................................ 34
“L4-00” – Inverter radiating fin temperature abnormality ......................................................................................................... 35
“L5-00” – Inverter instantaneous overcurrent (AC output) ....................................................................................................... 36
“P4-00” – Radiating fin temperature sensor abnormality......................................................................................................... 36
System................................................................................................................................................................................................. 38
“U0-00” – Refrigerant shortage................................................................................................................................................ 38
“U2-00” – Power supply abnormality or instantaneous power failure ...................................................................................... 38
“U4-00” – Transmission abnormality between indoor unit and outdoor unit ............................................................................ 39
“U7-00” – Transmission outdoor unit-outdoor unit abnormality ............................................................................................... 40
“UA-00” – Improper combination of indoor unit and outdoor unit ............................................................................................ 40
“UF-00” – Wiring and piping mismatch .................................................................................................................................... 41
Others ................................................................................................................................................................................................. 41
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RA R32 Split & multi split M-Series
ESIE16-02B | Part 2. Troubleshooting 2.2. Error based troubleshooting
2.2.1. Indoor unit
2.2.1.1. “A1-00” – PCB abnormality
Trigge r Effect Reset
The system cannot set the internal set­tings
Possible cause Check Corrective action
Wrong models interconnected Check if unit combination is official.
Faulty wiring. Check the connection of all terminals by
Faulty or disturbance of the power supply (imbalance > 10%). Power drop. Short cir­cuit.
Faulty indoor PCB. Check if error still occurs after turning off
Unit will stop operating. Power reset via outdoor unit.
Install compatible models.
Refer to ‘Combination database’.
disconnecting and reconnecting all termi­nals.
Check if the power supply is conform with regulations. No fluctuations in frequency.
power and turning it back on again.
Check if the indoor PCB receives power.
Check if the HAP LED is blinking in regu­lar intervals.
Check if the correct spare part is installed.
Check the wiring to indoor PCB.
Replace wire harness/terminal when con­nection is not OK.
Adjust power supply when required. Power reset via outdoor unit.
Adjust power to the indoor PCB.
Replace indoor PCB when HAP LED is not blinking in regular intervals.
Install correct spare part or update indoor PCB.
Adjust wiring to indoor PCB when required.
2.2.1.2. “A1-01” – PCB abnormality
Trigge r Effect Reset
The system cannot set the internal set­tings
Possible cause Check Corrective action
Wrong models interconnected Check if unit combination is official.
Faulty wiring. Check the connection of all terminals by
Faulty or disturbance of the power supply (imbalance > 10%). Power drop. Short cir­cuit.
Faulty indoor PCB. Check if error still occurs after turning off
Unit will stop operating. Power reset via outdoor unit.
Install compatible models.
Refer to ‘Combination database’.
disconnecting and reconnecting all termi­nals.
Check if the power supply is conform with regulations. No fluctuations in frequency.
power and turning it back on again.
Check if the indoor PCB receives power.
Check if the HAP LED is blinking in regu­lar intervals.
Check if the correct spare part is installed.
Check the wiring to indoor PCB.
Replace wire harness/terminal when con­nection is not OK.
Adjust power supply when required. Power reset via outdoor unit.
Adjust power to the indoor PCB.
Replace indoor PCB when HAP LED is not blinking in regular intervals.
Install correct spare part or update indoor PCB.
Adjust wiring to indoor PCB when required.
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ESIE16-02B | Part 2. Troubleshooting 2.2. Error based troubleshooting
2.2.1.3. “A5-00” – Freeze-up protection / Heating peak cut control
Trigge r Effect Reset
• during cooling operation, indoor heat exchanger temperature is below 0°C (freeze-up protection control).
• during heating operation, indoor heat exchanger is above 65°C (heating peak-cut control).
Possible cause Check Corrective action
Air short-circuit. Check if the airflow around the unit is OK
Clogged air filter. Check if the air filter is clogged. Clean the air filter.
Dust accumulation on indoor heat exchanger.
Faulty indoor heat exchanger thermistor. Check indoor heat exchanger thermistor. Replace indoor heat exchanger thermistor
Faulty indoor PCB. Check if error still occurs after turning off
Unit will stop operating. Automatic reset when temperature is
and there are no obstructions.
Check if indoor heat exchanger is dirty/dusty.
power and turning it back on again.
Check if the indoor PCB receives power.
Check if the HAP LED is blinking in regu­lar intervals.
Check if the correct spare part is installed.
Check the wiring to indoor PCB.
within range.
Remove obstruction.
Clean the indoor heat exchanger.
when required.
Adjust power to the indoor PCB.
Replace indoor PCB when HAP LED is not blinking in regular intervals.
Install correct spare part or update indoor PCB.
Adjust wiring to indoor PCB when required.
2.2.1.4. “A6-00” – Fan motor abnormality
Trigge r Effect Reset
The rotation speed of the fan motor is not detected while the output voltage to the fan is at its maximum.
Possible cause Check Corrective action
Faulty indoor PCB. Check if error still occurs after turning off
Faulty indoor fan motor. Check the fan motor.
Indoor fan motor locked. Switch of the power.
More info:
Check procedures Replacing procedures
"Fan motor" on page 44
Unit will stop operating. Power reset via outdoor unit.
power and turning it back on again.
Check if the indoor PCB receives power.
Check if the HAP LED is blinking in regu­lar intervals.
Check if the correct spare part is installed.
Check the wiring to indoor PCB.
Check fan motor connections and wiring.
Turn fan manually.
Adjust power to the indoor PCB.
Replace indoor PCB when HAP LED is not blinking in regular intervals.
Install correct spare part or update indoor PCB.
Adjust wiring to indoor PCB when required.
Replace fan motor when required.
Adjust wiring when required.
Replace fan motor when the fan does not turn smoothly.
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RA R32 Split & multi split M-Series
ESIE16-02B | Part 2. Troubleshooting 2.2. Error based troubleshooting
2.2.1.5. “C4-00” – Liquid pipe thermistor for heat exchanger abnormality
Trigge r Effect Reset
Thermistor input is > 4.96 V or < 0.04 V during compressor operation.
Possible cause Check Corrective action
Faulty liquid pipe thermistor. Check liquid pipe thermistor. Replace liquid pipe thermistor when
Faulty indoor unit main PCB. Check if error still occurs after turning off
More info:
Check procedures Replacing procedures
"Refrigerant thermistors" on page 56
Unit will stop operating. Power reset via outdoor unit.
required.
power and turning it back on again.
Check if the indoor PCB receives power.
Check if the HAP LED is blinking in regu­lar intervals.
Check if the correct spare part is installed.
Check the wiring to indoor PCB.
Adjust the power to the indoor main PCB.
Replace indoor main PCB when HAP LED is not blinking in regular intervals.
2.2.1.6. “C7-00” – Front panel open/close fault
Trigge r Effect Reset
Shutter limit switch not activated or faulty. Unit will stop operating when error occurs
2 times.
Power reset via outdoor unit.
Possible cause Check Corrective action
Foreign substance in the blow port. Check blow port for foreign material. Remove foreign material when required.
Faulty shutter limit switch. Check the limit switch continuity. Replace the limit switch when continuity is
Faulty wire harness. Check the wire harness wiring.
Check the wire harness connection.
Faulty shutter motor. Check if motor operates after opening the
shutter and power reset.
Faulty shutter sealing. Check if shutter goes back open automat-
ically after closing.
Shutter is deformed. Check if the error is still active after clos-
ing the shutter.
not good.
Reconnect wire harness when required.
Perform a power reset, if shutter valve does not close after power reset, replace wire harness.
Replace indoor unit main PCB when required.
Replace sealing material when required.
Replace shutter panel when required.
2.2.1.7. “C9-00” – Suction air thermistor abnormality
Trigge r Effect Reset
Resistance value is out of range.
T measured < -43.6°C or > 90°C.
4/04/17 | Version 1.1 Page 23
Unit will stop operating. Automatic reset when resistance is within
range.
RA R32 Split & multi split M-Series
ESIE16-02B | Part 2. Troubleshooting 2.2. Error based troubleshooting
Possible cause Check Corrective action
Faulty suction air thermistor. Check suction air thermistor. Replace suction air thermistor when
Faulty indoor PCB. Check if error still occurs after turning off
power and turning it back on again.
Check if the indoor PCB receives power.
Check if the HAP LED is blinking in regu­lar intervals.
Check if the correct spare part is installed.
Check the wiring to indoor PCB.
required.
Adjust power to the indoor PCB.
Replace indoor PCB when HAP LED is not blinking in regular intervals.
Install correct spare part or update indoor PCB.
Adjust wiring to indoor PCB when required.
More info:
Check procedures Replacing procedures
"Refrigerant thermistors" on page 56
2.2.1.8. “UH-00” – Anti-icing function in other room(s)
Trigge r Effect Reset
A wrong connection is detected by check­ing the combination of the indoor and out­door unit on the CPU
Operation halt due to freeze up prevention in other room/unspecified internal or externa voltages/mismatch indoor and outdoor units
Auto reset after freeze up prevention is finished. Unit cannot restart before mis­match is removed.
Possible cause Check Corrective action
Freeze up prevention in other room. Indoor fan is not operating while the error
is displayed.
Mismatch of outdoor-indoor units. Verify connection on combination data-
base.
Unspecified voltages. Check supply voltage. Adjust when required.
See error A5.
Replace indoor units when required.
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RA R32 Split & multi split M-Series
ESIE16-02B | Part 2. Troubleshooting 2.2. Error based troubleshooting
2.2.2. Outdoor unit
2.2.2.1. “E1-00” – Outdoor unit PCB abnormality
Trigge r Effect Reset
Outdoor main PCB detects that EEPROM is abnormal.
Possible cause Check Corrective action
Faulty outdoor unit main PCB. Check if the HAP LED is blinking in regu-
Faulty capacity adapter on outdoor main PCB installed.
External factor (e.g. electrical noise) (cause when error is reset after power reset, and error happens again after a while).
Faulty outdoor fan motor. Check the fan motor.
Faulty or disturbance of the power supply (imbalance > 10%). Power drop. Short cir­cuit.
Unit will stop operating. Manual reset via user interface.
Power reset via outdoor unit.
lar intervals.
Check if the correct spare part is installed.
Check if the outdoor main PCB receives power.
Check if the correct capacity adapter is used.
Check for source which could cause elec­trical interference.
Check fan motor connections and wiring.
Check if the power supply is conform with regulations. No fluctuations in frequency.
Restore the power to the outdoor main PCB.
Replace outdoor main PCB when HAP LED is not blinking in regular intervals.
Replace capacity adapter when required.
Replace fan motor when required.
Adjust wiring when required.
Adjust power supply when required.
Power reset via outdoor unit.
2.2.2.2. “E3-00” – Discharge pressure abnormality
Trigge r Effect Reset
Discharge pressure above 4.15 MPa. Unit will stop operating. Automatic reset when high pressure drops
Possible cause Check Corrective action
Stop valve is closed. Check stop valve. Open stop valve when required.
Blocked heat exchangers. Are the heat exchangers clean? Clean heat exchangers.
Insufficient airflow. Are the fans operating? Repair fan.
Non condensables in refrigerant. Check for non condensables in refriger-
Disconnected HPS wire harness terminal on the PCB.
Disconnected HPS wire harness terminal on the HPS.
Defective outdoor PCB. Verify resistance of the wire harness ter-
Broken high pressure sensor wire har­ness.
Defective high pressure switch. Check the resistance of the high pressure
ant.
Verify connection wire harness terminal on PCB.
Verify connection wire harness terminal on HPS.
minal on the outdoor PCB.
Verify resistance of the wire harness. If resistance = infinity, replace wire har-
switch.
below 3.2 MPa.
In case of suspicion of non condensables, recover, vacuum and recharge with virgin refrigerant.
Reconnect the terminal.
Reconnect the terminal(s).
If nearly 0 Ohm, replace outdoor PCB.
ness.
If resistance = infinity, replace high pres­sure switch.
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RA R32 Split & multi split M-Series
ESIE16-02B | Part 2. Troubleshooting 2.2. Error based troubleshooting
2.2.2.3. “E5-00” – Compressor motor lock or overheated
Trigge r Effect Reset
Compressor overload is detected. Unit will stop operating. Automatic reset if the unit runs for 60 sec-
Possible cause Check Corrective action
Faulty discharge pipe thermistor. Check discharge pipe thermistor. Replace discharge pipe thermistor when
Faulty outdoor fan motor. Check the fan motor.
Check fan motor connections and wiring.
Faulty overload protection. Check the overload protection.
Check the overload protection connec­tions and wiring.
Faulty expansion valve. Check the expansion valve. Replace the expansion valve body or
Faulty 4-way valve. Check the 4-way valve. Replace the 4-way valve coil or body
Faulty outdoor unit main PCB. Check if the HAP LED is blinking in regu-
Faulty power module = faulty outdoor inverter PCB.
Refrigerant shortage. Check for refrigerant shortage. Refer to
Humidity in refrigerant (ice formation in expansion valve).
Non condensables in refrigerant. Check for non condensables in refriger-
Stop valve is closed. Check stop valve. Open stop valve when required.
lar intervals.
Check if the correct spare part is installed.
Check if the outdoor main PCB receives power.
Check outdoor inverter PCB.
Check if the HAP LED is blinking in regu­lar intervals.
Check if the correct spare part is installed.
the nameplate for the correct charge.
Check for humidity in the refrigerant. In case of suspicion of humidity, recover,
ant.
onds without error.
required.
Replace fan motor when required.
Adjust wiring when required.
Replace the overload protection when required.
Adjust wiring when required.
motor when required.
when required.
Restore the power to the outdoor main PCB.
Replace outdoor main PCB when HAP LED is not blinking in regular intervals.
Restore the power to the outdoor inverter PCB.
Replace the outdoor inverter PCB when required.
Charge the correct refrigerant amount when required.
vacuum and recharge with virgin refriger­ant.
In case of suspicion of non condensables, recover, vacuum and recharge with virgin refrigerant.
2.2.2.4. “E6-00” – Compressor motor lock
Trigge r Effect Reset
The motor rotor does not rotate when the compressor is energized.
Possible cause Check Corrective action
Faulty discharge thermistor. Check the discharge thermistor. Replace discharge thermistor when
Refrigerant shortage. Check for refrigerant shortage. Refer to
Humidity in refrigerant (ice formation in expansion valve).
Page 26 4/04/17 | Version 1.1
Unit will not stop operating. Automatic reset after a continuous run for
Unit will stop operating. Manual reset via user interface.
the nameplate for the correct charge.
Check for humidity in the refrigerant. In case of suspicion of humidity, recover,
about 10 min.
required.
Charge the correct refrigerant amount when required.
vacuum and recharge with virgin refriger­ant.
RA R32 Split & multi split M-Series
ESIE16-02B | Part 2. Troubleshooting 2.2. Error based troubleshooting
Possible cause Check Corrective action
Non condensables in refrigerant. Check for non condensables in refriger-
Stop valve is closed. Check stop valve. Open stop valve when required.
Refrigerant circuit is clogged (HP - LP > 0,26 MPa).
Faulty compressor. Check compressor.
Compressor turned off too fast. Wait for guard timer.
Faulty outdoor unit main PCB. Check if the HAP LED is blinking in regu-
Faulty outdoor inverter PCB. Check outdoor inverter PCB.
Faulty 4-way valve. Check the 4-way valve. Replace the 4-way valve coil or body
Faulty expansion valve. Check the expansion valve. Replace the expansion valve body or
ant.
Check for possible blockage (blockages can be checked by measuring the refriger­ant/pipe temperature. Sudden drop in temperature could indicate a blockage (remark: this is not valid for the expansion valve)).
Check connections and wiring of the com­pressor.
Check expansion valve (liquid back issue).
Check the refrigerant charge. Refer to the nameplate for correct charge.
lar intervals.
Check if the correct spare part is installed.
Check if the outdoor main PCB receives power.
Check if the HAP LED is blinking in regu­lar intervals.
Check if the correct spare part is installed.
In case of suspicion of non condensables, recover, vacuum and recharge with virgin refrigerant.
Replace the blocked part.
Replace compressor when required.
Investigate reason of breakdown.
Replace expansion valve when required.
Fix possible leak.
Restore the power to the outdoor main PCB.
Replace outdoor main PCB when HAP LED is not blinking in regular intervals.
Restore the power to the outdoor inverter PCB.
Replace the outdoor inverter PCB when required.
when required.
motor when required.
2.2.2.5. “E7-00” – Fan motor abnormality
Trigge r Effect Reset
Fan does not start in about 15~30 sec­onds = fan motor lock.
It can occur that E7-00 error is triggered even when the fan motor is running caused by a faulty hall signal.
Possible cause Check Corrective action
Faulty outdoor fan motor. Check the fan motor.
Faulty outdoor inverter PCB. Check outdoor inverter PCB.
Blown fuse. Check the fuse on the outdoor unit PCB's. Replace fuse when required.
Unit will not stop operating. Automatic reset after a continuous run.
Unit will stop operating. Manual reset via user interface.
Replace fan motor when required.
Check fan motor connections and wiring.
Check if the HAP LED is blinking in regu­lar intervals.
Check if the correct spare part is installed.
Adjust wiring when required.
Restore the power to the outdoor inverter PCB.
Replace the outdoor inverter PCB when required.
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RA R32 Split & multi split M-Series
ESIE16-02B | Part 2. Troubleshooting 2.2. Error based troubleshooting
2.2.2.6. “E8-00” – Compressor overcurrent detection
Trigge r Effect Reset
When the compressor is running the cur­rent exceeds 9.25 A ~ 20 A (depending on the unit) for 2.5 seconds.
Possible cause Check Corrective action
Outdoor temperature is out of operation range.
Faulty compressor. Check compressor.
Faulty power module.
= Faulty inverter PCB.
Faulty or disturbance of the power supply (imbalance > 10%). Power drop. Short cir­cuit.
Unit will stop operating. Manual reset via user interface.
Check the outdoor temperature. Wait until the temperature is within opera-
Check connections and wiring of the com­pressor.
Check expansion valve (liquid back issue).
Check the refrigerant charge. Refer to the nameplate for correct charge.
Check outdoor inverter PCB.
Check if the HAP LED is blinking in regu­lar intervals.
Check if the correct spare part is installed.
Check if the power supply is conform with regulations. No fluctuations in frequency.
tion range.
Replace compressor when required.
Investigate reason of breakdown.
Replace expansion valve when required.
Fix possible leak.
Restore the power to the outdoor inverter PCB.
Replace the outdoor inverter PCB when required.
Adjust power supply when required. Power reset via outdoor unit.
2.2.2.7. “EA-00” – 4-way valve abnormality
Trigge r Effect Reset
The room thermistor / indoor heat exchanger are not functioning within oper­ation range.
Possible cause Check Corrective action
Faulty 4-way valve coil. Check 4-way valve coil. Replace 4-way valve coil when required.
Faulty 4-way valve body, blocked. Check 4-way valve body. Replace 4-way valve body when required.
Faulty outdoor unit main PCB. Check if the HAP LED is blinking in regu-
Faulty room thermistor. Check room thermistor. Replace room thermistor when required.
Faulty indoor heat exchanger thermistor. Check indoor heat exchanger thermistor. Replace indoor heat exchanger thermistor
Refrigerant shortage. Check for refrigerant shortage. Refer to
Humidity in refrigerant (ice formation in expansion valve).
Non condensables in refrigerant. Check for non condensables in refriger-
Stop valve is closed. Check stop valve. Open stop valve when required.
Faulty stop valve. Check the stop valve. Replace the stop valve when required.
Unit will not stop operating. Automatic reset when unit runs without
Unit will stop operating. Manual reset via user interface.
lar intervals.
Check if the correct spare part is installed.
Check if the outdoor main PCB receives power.
the nameplate for the correct charge.
Check for humidity in the refrigerant. In case of suspicion of humidity, recover,
ant.
error for 60 minutes.
Restore the power to the outdoor main PCB.
Replace outdoor main PCB when HAP LED is not blinking in regular intervals.
when required.
Charge the correct refrigerant amount when required.
vacuum and recharge with virgin refriger­ant.
In case of suspicion of non condensables, recover, vacuum and recharge with virgin refrigerant.
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RA R32 Split & multi split M-Series
ESIE16-02B | Part 2. Troubleshooting 2.2. Error based troubleshooting
2.2.2.8. “F3-00” – Discharge pipe temperature abnormality
Trigge r Effect Reset
Discharge temperature is too high:
• If the discharge temperature detected is above A°C, 10 times within 200 min.
• If within 200 min the discharge temperature detected is 10 times above B°C for 15 min.
Possible cause Check Corrective action
Refrigerant shortage. Check for refrigerant shortage. Refer to
Humidity in refrigerant (ice formation in expansion valve).
Non condensables in refrigerant. Check for non condensables in refriger-
Stop valve is closed. Check if stop valve is open. Open stop valve when required.
Faulty 4-way valve. Check the 4-way valve. Replace the 4-way valve coil or body
Faulty expansion valve. Check the expansion valve. Replace the expansion valve body or
Faulty outdoor unit main PCB. Check if the HAP LED is blinking in regu-
Faulty discharge thermistor. Check discharge thermistor. Replace discharge thermistor when
Faulty heat exchanger thermistor. Check heat exchanger thermistor. Replace heat exchanger thermistor when
Faulty outdoor temperature thermistor. Check outdoor temperature thermistor. Replace outdoor temperature thermistor
Unit will not stop operating. Automatic reset when temperature drops
Unit will stop operating. Manual reset via remote controller.
the nameplate for the correct charge.
Check for humidity in the refrigerant. In case of suspicion of humidity, recover,
ant.
lar intervals.
Check if the correct spare part is installed.
Check if the outdoor main PCB receives power.
below C°C.
Charge the correct refrigerant amount when required.
vacuum and recharge with virgin refriger­ant.
In case of suspicion of non condensables, recover, vacuum and recharge with virgin refrigerant.
when required.
motor when required.
Restore the power to the outdoor main PCB.
Replace outdoor main PCB when HAP LED is not blinking in regular intervals.
required.
required.
when required.
2.2.2.9. “F6-00” – High pressure abnormality or refrigerant overcharge
Trigge r Effect Reset
Outdoor heat exchanger thermistor meas­ures temperature > 60°C~65°C (depend­ing on model).
Possible cause Check Corrective action
Installation space is too small. Check if the installation space is in line
Dirty outdoor heat exchanger. Clean the outdoor heat exchanger.
Faulty outdoor fan motor. Check the fan motor.
Faulty stop valve. Check the stop valve. Replace the stop valve when required.
Faulty heat exchanger thermistor. Check heat exchanger thermistor. Replace heat exchanger thermistor when
Faulty expansion valve. Check the expansion valve. Replace the expansion valve body or
4/04/17 | Version 1.1 Page 29
Unit will not stop operating. Automatic reset when temperature drops
with regulations.
Check fan motor connections and wiring.
below 50°C.
Adjust installation space.
Replace fan motor when required.
Adjust wiring when required.
required.
motor when required.
RA R32 Split & multi split M-Series
ESIE16-02B | Part 2. Troubleshooting 2.2. Error based troubleshooting
Possible cause Check Corrective action
Faulty outdoor unit main PCB. Check if the HAP LED is blinking in regu-
lar intervals.
Check if the correct spare part is installed.
Check if the outdoor main PCB receives power.
Restore the power to the outdoor main PCB.
Replace outdoor main PCB when HAP LED is not blinking in regular intervals.
2.2.2.10. “H0-00” – Compressor sensor system abnormality
Trigge r Effect Reset
DC voltage before compressor start-up is out of range (0.5~4.5 V).
DC voltage before compressor start-up is below 50 V.
Possible cause Check Corrective action
Faulty outdoor unit main PCB. Check if the HAP LED is blinking in regu-
Faulty outdoor inverter PCB. Check outdoor inverter PCB.
Faulty connection or wiring of the PCB's. Check the connections and the wiring of
Faulty or disturbance of the power supply (imbalance > 10%). Power drop. Short cir­cuit.
Unit will stop operating. Manual reset via user interface.
Unit will stop operating. Manual reset via user interface.
lar intervals.
Check if the correct spare part is installed.
Check if the outdoor main PCB receives power.
Check if the HAP LED is blinking in regu­lar intervals.
Check if the correct spare part is installed.
the PCB’s.
Check if the power supply is conform with regulations. No fluctuations in frequency.
Restore the power to the outdoor main PCB.
Replace outdoor main PCB when HAP LED is not blinking in regular intervals.
Restore the power to the outdoor inverter PCB.
Replace the outdoor inverter PCB when required.
Adjust connection or wiring when required.
Adjust power supply when required. Power reset via outdoor unit.
2.2.2.11. “H6-00” – Position detection sensor abnormality
Trigge r Effect Reset
Compressor fails to start within 15 sec­onds after the compressor run command signal is sent.
Possible cause Check Corrective action
Faulty compressor. Check compressor.
Faulty outdoor unit main PCB. Check if the HAP LED is blinking in regu-
Unit will not stop operating. Automatic reset after a continuous run of
Unit will stop operating if the warning occurs 8 times.
Check connections and wiring of the com­pressor.
Check expansion valve (liquid back issue).
Check the refrigerant charge. Refer to the nameplate for correct charge.
lar intervals.
Check if the correct spare part is installed.
Check if the outdoor main PCB receives power.
10 minutes.
Manual reset via remote controller.
Replace compressor when required.
Investigate reason of breakdown.
Replace expansion valve when required.
Fix possible leak.
Restore the power to the outdoor main PCB.
Replace outdoor main PCB when HAP LED is not blinking in regular intervals.
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